The over-limit limit for CCB credit cards is generally controlled at about 5-10 of the original total limit. It should be noted that CCB currently does not charge over-limit fees, but if the limit is used up and exceeded, the limit will be displayed as a negative number. When the credit card is in the over-limit state, some businesses cannot be processed, such as installments. Apply for temporary quota, etc. The excess amount needs to be paid off in one lump sum in the next period and cannot be paid in installments.

A credit card, also called a credit card, is a credit certificate issued by a commercial bank or credit card company to consumers with qualified credit. It takes the form of a card with the issuing bank's name, validity period, number, cardholder's name and other contents printed on the front, and a magnetic stripe and signature strip on the back. Consumers holding credit cards can shop or consume at specially designated commercial service departments, and then the bank will settle the accounts with merchants and cardholders. Cardholders can overdraft within the prescribed limit.

Credit cards stipulated in the relevant laws of our country ("Interpretation of the Standing Committee of the National People's Congress on Relevant Credit Card Regulations") refer to credit cards issued by commercial banks or other financial institutions with the functions of consumption payment, credit loans, transfer settlement , deposit and withdrawal of cash and other full or partial functions of electronic payment cards [1-2]. On December 1, 2017, the "English Translation and Writing Standards in the Public Service Field" was officially implemented, stipulating that the standard English name of credit cards is Credit Card.

Credit card consumption is a non-cash transaction payment method. There is no need to pay cash when consumption, and repayment will be made on the billing date.

Credit cards are divided into credit cards and quasi-credit cards. Credit cards refer to credit cards in which the cardholder has a certain credit limit and can consume within the credit limit and then repay; quasi-credit card It refers to a quasi-credit card in which the cardholder deposits a certain amount of reserve fund as required. When the reserve account balance is insufficient to pay, the cardholder can overdraw within the prescribed credit limit. The so-called credit card generally refers to a credit card only.

Starting from January 1, 2021, the credit card overdraft interest rate will be determined independently by the card issuer and the cardholder through independent negotiation, and the upper and lower limit management of credit card overdraft interest rates will be cancelled. The daily interest rate is 0.7 times 5/10,000).

On May 25, 2021, the Supreme People's Court issued and implemented the "Regulations of the Supreme People's Court on Several Issues in the Trial of Bank Card Civil Disputes".